/**
 * Copyright 2018 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * @externs
 */

/**
 * @typedef {function(Array<!ResizeObserverEntry>, !ResizeObserver)}
 */
var ResizeObserverCallback;

/**
 * @constructor
 * @param {!ResizeObserverCallback} callback
 */
function ResizeObserver(callback) {}

/** @type {function(!Element)} */
ResizeObserver.prototype.observe;

/** @type {function(!Element)} */
ResizeObserver.prototype.unobserve;

/** @type {function()} */
ResizeObserver.prototype.disconnect;

/**
 * @constructor
 * @param {!Element} target
 */
function ResizeObserverEntry(target) {}

/** @const {!Element} */
ResizeObserverEntry.prototype.target;

/**
 * @const {{
 *   x: number,
 *   y: number,
 *   width: number,
 *   height: number,
 * }}
 */
ResizeObserverEntry.prototype.contentRect;
